Water-swelling polymers cross-linked with unsaturated amino alcohols, the production and use of same

US6087450A · kind A · utility

Assignee

• Stockhausen GmbH & Co. KG · DE

Inventors

• Ludger Breitbach · Duisburg, DE
• Kurt Dahmen · Rheydt, DE
• Jochen Houben · Kempen, DE
• Erich Kuster · Krefeld, DE

Key dates

• Filing date: May 20, 1998
• Grant date: Jul 11, 2000
• Expiry date: May 20, 2018

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01B3/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to cross-linked polymers absorbing aqueous liquids, which are built up of partially neutralized, mono-ethylenically unsaturated, acid groups-containing monomers, optionally further monomers copolymerizable with these, as well as optional polymers suitable as a graft basis, and that can be produced by using cross-linking agents of polyunsaturated amino alcohols. The used cross-linking agents are reaction products of (meth)allylamines with monoglycidyl compounds, di-, tri- or tetraglycidyl compounds, and optional alkylene oxide; reaction products of (meth)allylamines or saturated primary amines with (meth)acrylglycide esters and/or (meth)allyl glycidyl ethers and optional alkylene oxide; as well as reaction products of di- and polyamides with (meth)allyl glycide esters and/or (meth)acrylglycide esters and optional alkylene oxide. The polymers according to the present invention provide superabsorbers whose property level meets the practice-oriented requirements with respect to retention, absorption under pressure, swelling pressure, and permeability for aqueous liquids. Such polymers are used as absorbents for water and aqueous liquids in constructions fo…